CN104891744B - Photocatalytic film distillation printing and dyeing wastewater treatment and recovery system and technology - Google Patents
Photocatalytic film distillation printing and dyeing wastewater treatment and recovery system and technology Download PDFInfo
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- CN104891744B CN104891744B CN201510317655.6A CN201510317655A CN104891744B CN 104891744 B CN104891744 B CN 104891744B CN 201510317655 A CN201510317655 A CN 201510317655A CN 104891744 B CN104891744 B CN 104891744B
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- aeration
- reaction tank
- membrane materials
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- sewage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a photocatalytic film distillation printing and dyeing wastewater treatment and recovery system and technology. The treatment and recovery technology comprises the following steps: putting printing and dyeing wastewater into an aeration zone of a photocatalytic degradation reaction tank for aeration, and conducting electrodeless ultraviolet catalytic reaction on the aerated wastewater I; after reaction, pumping wastewater into a film distillation biological reaction tank for aeration, conducting desalination on the aerated wastewater II through a distillation film component, carrying out circulating cooling, repeated aeration and desalination through a first circulating pump and a condenser, and discharging qualified water through a clean water basin. The system and the technology have the advantages that the COD removing rate for wastewater reaches 99% or higher, the decolourization ratio and the desalination rate reach 99 percent or higher, highly purification of water is realized, and the water recovery and utilization rates reach 80 percent or higher.
Description
Technical field
The invention belongs to treatment of dyeing wastewater field is and in particular to a kind of photocatalysis membrana distills treatment of dyeing wastewater reuse system
System and technique.
Background technology
Sustainable Water Resources Development and the development of reuse Hydraulic Projects, have greatly promoted the development of recovering and using technology of water, especially
The reuse of dyeing waste water, water quality and reuse index are not quite similar.For printing-dying wastewater recycling, it mainly removes suspended particulate substance
(SS), Organic substance (COD/BOD), nitrogen phosphorus compound (N/P), inorganic ionss and metal ion, salt and virus and bacteria etc..
Biological aerated filter (BAF) is the work being widely used in Water circulation system growing up late 1980s
Skill.Biological aerated filter mainly carries out advanced treating to the organic carbon pollutant in waste water, ammonia nitrogen, phosphorus etc., with filtrate filler
Material, the development of simultaneous oxygen aerobic process compound mode, current BAF has developed removal SS, COD but also has had stronger nitre
Change denitrification, denitrogenation dephosphorizing and remove the functions such as harmful substance (AOX).
Membrane technology due to its unique Selective Separation ability, with the maturation of technology in recent years, and film manufacturing cost
Decline, occur in that the membrane technology recovering and using technology of water as representative with membrane bioreactor (MBR) and bi-membrane method (UF+R0), especially
It is the advantage having uniqueness in field of wastewater such as hardly degraded organic substance, high saliferous, colourities.But, water rate is low, cutoff performance is poor,
High energy consumption is still the restriction wide variety of key factor of current reverse osmosis membrane.
Film distillation technology is that membrane separation technique is combined with one kind of still-process, and it has disengagement area big, produces water purity height,
Equipment is simple, is commonly used to process the aqueous solution of high concentration；Membrance separation also combine with photocatalysis technology formation photocatalysis membrana divide
From technology, membrance separation and traditional biochemical treatment define membrane bioreactor (MBR) technology being worthy to be popularized most at present.But
How to improve synchronous denitrification dephosphorizing effect, if rationally arranging backwashing system, how effectively createing conjunction in BAF system
The aerobic zone of reason, anoxic zone, anaerobic zone environment still need to be explored further.
Content of the invention
The present invention is in order to solve above-mentioned technical problem, there is provided a kind of photocatalysis membrana distills treatment of dyeing wastewater reclaiming system
And technique.This system has reached more than 99% to the clearance of COD in waste water water, and percent of decolourization and salt rejection rate reach more than 99%, in fact
Show purification and the reuse of water, the recovery utilization rate of water reaches more than 80%, effectively saved water resource, make use of clear simultaneously
The clean energy, reduces energy consumption.
The present invention is achieved by the following technical solutions：
Photocatalysis membrana distills treatment of dyeing wastewater reclaiming system, including the intake pool being sequentially connected, photocatalytic degradation reaction
Pond, Membrane Materials biological reaction pool, clear water reserviors, between the bottom of the top of photocatalytic degradation reaction tank and Membrane Materials biological reaction pool
Connecting pipe be provided with the second sewage pump, between the bottom of the bottom of photocatalytic degradation reaction tank and Membrane Materials biological reaction pool
Connecting pipe be provided with second circulation pump, photocatalytic degradation reaction tank and Membrane Materials biological reaction pool through the second sewage pump, the
Two circulating pumps constitute blood circulation；Clear water reserviors and Membrane Materials biological reaction pool connect into loop structure through two connecting pipes, and two
First circulation pump and condenser are respectively equipped with individual connecting pipe；The bottom of photocatalytic degradation reaction tank is provided with water distributing plate, water distribution
Plate is arranged below aeration zone, and the top of photocatalytic degradation reaction tank is provided with microwave electrodeless ultraviolet light lamp.
The present invention passes through TiO2Microwave electrodeless ultraviolet light catalysis technology and film distillation technology carry out scientific combination, by light
Catalysis oxidation, adsoption catalysis oxidation, microwave desorption and accelerated oxidation synergism, the Organic substance in waste water is degraded rapidly to
CO2、H2The nontoxic small molecule thing such as O, carries out desalination using distillation membrane technology to solution after degraded, to COD in waste water water simultaneously
Clearance reached more than 99%, percent of decolourization and salt rejection rate reach more than 99%, realize the highly purified of water, the recycling of water
Rate reaches more than 80%.Additionally, carrying out the sewage of multiple circular treatment, it is possible to reduce the fouling membrane in next step course of reaction.
Preferably, microwave electrodeless ultraviolet light lamp is located in quartzy lampshade, quartz lamp cover outer wall uniform application has powder
TiO2.
Preferably, photocatalytic degradation pond top also sets up ozonolysis equipment.
Preferably, the heat collector in Membrane Materials biological reaction pool connects to solar energy absorption plant.Achieve cleaning energy
The recycling in source, greatly reduces energy resource consumption, has saved cost.
Preferably, the first micro porous aeration head of photocatalytic degradation reaction tank and Membrane Materials biological reaction pool bottom, second
Micro porous aeration head is all connected with blower fan.
Preferably, being provided with temperature sensor, pH sensor and liquid level controller, Membrane Materials in photocatalytic degradation reaction tank
It is provided with temperature sensor and pH sensor in biological reaction pool.
Preferably, being filled with mercury metal and noble gases in microwave electrodeless ultraviolet light lamp, the frequency of microwave discharge is
2450-5000 MHz.
Preferably, distillation film component adopts poly tetrafluoroethylene or polypropylene screen, membrane aperture is 0.1～0.4 μm.
Photocatalysis membrana distills the technique for the treatment of of dyeing wastewater reclaiming system, comprises the following steps：
The dyeing waste water of intake pool in the presence of the first sewage pump, through in pipeline input light catalytic degradation reaction pond；
In the aeration zone of photocatalytic degradation reaction tank, in the presence of blower fan, aeration is carried out to sewage, the dirt after aeration
Water conservancy carries out microwave electrodeless ultraviolet light catalysis reaction with microwave electrodeless ultraviolet light lamp；
Upper from photocatalytic degradation reaction tank by the second sewage pump through the reacted sewage of microwave electrodeless ultraviolet light catalysis
Portion pumps into the aeration zone aeration of the bottom of Membrane Materials biological reaction pool, and the sewage after aeration is through distillation film component desalination；
Through aeration, desalination sewage in the presence of first circulation pump, clear water reserviors and Membrane Materials biological reaction pool it
Between circulate, and cool down in the presence of condenser, qualified clear water after flow out through clear water reserviors.
Preferably, the pH value in photocatalytic degradation reaction tank is 6.5～7.5.
Preferably, temperature is 15～20 DEG C in clear water reserviors.
Preferably, the temperature in distillation membrane biological reaction pond is 50-60 DEG C.Outstanding for the high thermal source sewage such as dyeing waste water
It is applicable.
The invention has the advantages that：Using TiO2Microwave electrodeless ultraviolet light catalysis technology is it is achieved that photocatalytic-oxidation
Change, adsoption catalysis oxidation, microwave desorption and accelerated oxidation synergism, improve oxidation rate and effect, meanwhile, light intensity
Greatly, life-span length, reduces investment and operating cost；Using film distillation technology, equipment is simple, and water outlet purity is high, meanwhile, it is to avoid
High energy consumption that bi-membrane method (UF+R0) combines the unit is it is achieved that energy-saving.Reaction tank floor space of the present invention is little, technique letter
Single, easy to maintenance, efficiently save cost it is easy to Automated condtrol.
Brief description
Fig. 1 is workflow schematic diagram of the present invention.
In figure each digitized representation implication is as follows：1st, intake pool；2nd, the first sewage pump；3rd, photocatalytic degradation reaction tank；4th,
One micro porous aeration head；5th, water distributing plate；6th, quartzy lampshade；7th, microwave electrodeless ultraviolet light lamp；8th, ozonolysis equipment；9th, the second sewage
Pump；10th, Membrane Materials biological reaction pool；11st, heat collector；12nd, the second micro porous aeration head；13rd, distillation film component；14th, condenser；
15th, first circulation pump；16th, fluid flowmeter；17th, clear water reserviors；18th, solar energy absorption plant；19th, second gas effusion meter；20、
Second circulation pump；21st, blower fan；22nd, first gas effusion meter.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention become apparent from, below in conjunction with the accompanying drawings the present invention is done into one
The elaboration of step.
Embodiment 1
As shown in figure 1, a kind of photocatalysis membrana distills treatment of dyeing wastewater reclaiming system, including ozonolysis equipment 8, the sun
Can absorption plant 18 and the intake pool 1 being sequentially connected, photocatalytic degradation reaction tank 3, Membrane Materials biological reaction pool 10, clear water reserviors
17, the bottom of intake pool 1 and photocatalytic degradation reaction tank 3 is connected by the first sewage pump 2, photocatalytic degradation reaction tank 3 upper
The bottom connecting pipe of portion and Membrane Materials biological reaction pool 10 is provided with the second sewage pump 9, the bottom of photocatalytic degradation reaction tank 3
It is provided with second circulation pump 20 with the bottom connecting pipe of Membrane Materials biological reaction pool 10, photocatalytic degradation reaction tank 3 and film steam
Evaporate biological reaction pool 10 pass through the second sewage pump 9, second circulation pump 20 constitute blood circulation, Membrane Materials biological reaction pool 10 upper
Side passes through first circulation pump 15, condenser 14 and clear water reserviors 17 circulation and connects, and the temperature control in this circulating cooling area is in 15-20
℃.
Ozonolysis equipment 8 is connected with photocatalytic degradation pond 3 top, realizes collection and the decomposition of ozone.
Heat collector 11 within solar energy absorption plant 18 and Membrane Materials biological reaction pool 10 connects.The present embodiment is using temperature
Difference domination set pyrogen reason, after solar source absorption plant 18 absorbs solar radiation, thermal-collecting tube temperature rises, and reaches thermal-arrest
When device 11 and distillation membrane biological reaction pond 10 temperature water temperature difference △ t setting value, detecting system sends instruction, in central heater
In cold water input heat collector 11, water returns after being heated in distillation membrane biological reaction pond 10, makes distillation membrane biological reaction pond 10
Interior water reaches the temperature of setting.This Heating Zone Temperature is controlled to be 50-60 DEG C.
T, pH and LT of in figure is respectively temperature sensor, pH sensor and liquid level controller, and Monitoring and Controlling photocatalysis are dropped
Environmental change in solution reaction tank 3 and Membrane Materials biological reaction pool 10.PH value in described photocatalytic degradation reaction tank 3 is 6.5
～7.5.
Photocatalytic degradation reaction tank 3 is divided into twoth area by water distributing plate 5, and water distributing plate top is TiO2Light-catalyzed reaction area, under
Portion is aeration zone, and aeration zone is provided with the first micro porous aeration head 4；TiO2Light-catalyzed reaction area is provided with microwave electrodeless ultraviolet light lamp
7 are located in water white hollow quartz lampshade 6 with quartzy lampshade 6, microwave electrodeless ultraviolet light lamp 7, and quartzy lampshade 6 outside is uniformly
It is coated with powder semiconductor catalyst TiO2Thin film；Filler in microwave electrodeless ultraviolet light lamp 7 be mainly mercury metal and
Some noble gases, wherein, mercury vapour is the working gas in lamp, and noble gases are to start gas；The frequency of microwave discharge is
2450-5000 MHz；Microwave electrodeless ultraviolet light lamp 7 adopts the non-polar ultraviolet light source of microwave-excitation, realizes microwave, ultraviolet, generation
Ozone three is located at one, coordinates callable effective catalyst TiO2, realize photochemical catalytic oxidation, adsoption catalysis oxidation, microwave solution
Absorption and accelerated oxidation synergism, the Organic substance in waste water is degraded rapidly to CO2、H2The nontoxic small molecule thing such as O.
It is provided with distillation film component 13 and the second micro porous aeration head 12 in Membrane Materials biological reaction pool 10, distillation film component 13
Lower section is provided with the second micro porous aeration head 12 and heat collector 11.Distillation film component 13 adopts polytetrafluoroethylene PTFE film or poly- third
Alkene PP film, membrane aperture is 0.1-0.4 μm.The present embodiment adopts hydrophobicity to distill film, and distillation film both sides solution can not pass through hydrophobic
Property film, but vapor can carry out free transmission by its dry micropore in this film.Effect due to heat collector 11 makes steaming
Evaporate film both sides solution and there is higher temperature difference, warm side aqueous solution is higher than cold side with the water vapor pressure of membrane interface, and water vapour can be thoroughly
Cross fenestra to enter cold side from warm side and condense, be so that the realization of Membrane Materials process provides advantage.
First micro porous aeration head 4 passes through first gas effusion meter 22 and is connected with outside blower fan 21, the second micro porous aeration head
12 are connected with blower fan 21 by second gas effusion meter 19.
Work process：The sewage of intake pool 1 pumps into the aeration zone of photocatalytic degradation reaction tank 3 bottom by the first sewage pump 2,
Using blower fan 21, the first micro porous aeration head 4 aeration, the sewage after aeration enters light-catalyzed reaction area by water distributing plate 5, using microwave
Electrodeless ultraviolet light lamp 7 and quartzy lampshade 6 carry out microwave electrodeless ultraviolet light catalysis reaction, and the Organic substance in waste water is through TiO2Photoinduction
It is degraded to rapidly CO under the hole strong oxidation exciting2、H2The nontoxic small molecule thing such as O, realizes photocatalytic-oxidation simultaneously
Change, adsoption catalysis oxidation, microwave desorption；Sewage after oxidation-adsorption pumps into Membrane Materials biological reaction pool by the second sewage pump 9
10, utilize blower fan 21, the second micro porous aeration head 12 aeration in Membrane Materials biological reaction pool 10 bottom, the sewage after aeration is through steaming
Evaporate membrane module 13 desalination, by first circulation pump 15 and condenser 14 circulating cooling, after flow out through clear water reserviors 17.Second circulation
Sewage after Membrane Materials biological reaction pool 10 aeration can be pumped into photocatalytic degradation reaction tank 3 bottom and be exposed again by pump 20
Gas, reduces fouling membrane.
Embodiment 2
Waste water is produced using apparatus above and PROCESS FOR TREATMENT Jiangsu printing and dyeing enterprise.
Photocatalytic degradation reaction tank influent COD（COD）Concentration is 820mg/L, BOD5（5th day aerobic microbiological
The quantity of the free oxygen that oxidation Decomposition unit volume Organic substance in water is consumed）Concentration is 270mg/L, and water inlet average chrominance is
370 times, inflow temperature is 16 18 DEG C, and pH is 7.0-8.0, and electrical conductivity is 2580 μ s/cm.
In test run, photocatalytic degradation reaction tank pH is 6.5-7.0, and hydraulic detention time HRT is 6h, and distillation film is biological
Reaction tank bottom water temperature T is 52 54 DEG C, and pH is 6.5-7.0, and cooling recirculation system water temperature is 16-18 DEG C, and membrane material is using thin
Aqueouss fluorothene pvdf membrane, membrane flux is 14 18L/m2h.
Testing water outlet result is：COD concentration is 7.5mg/L, BOD5, TN and TP all do not detect, average chrominance be 1.2
Times, essentially colourless, electrical conductivity is 25 μ s/cm, and result show, and in waste water, the clearance of COD has reached 99.1%, percent of decolourization with
Salt rejection rate reach more than 99% it is achieved that water highly purified.
A specific embodiment being only the application disclosed above, but the application is not limited to this, any this area
Technical staff can think change, all should fall in the protection domain of the application.
Claims (7)
1. photocatalysis membrana distills treatment of dyeing wastewater reclaiming system it is characterised in that including intake pool (1), the light being sequentially connected
Catalytic degradation reaction pond (3), Membrane Materials biological reaction pool (10), clear water reserviors (17), the top of photocatalytic degradation reaction tank (3) and
Connecting pipe between the bottom of Membrane Materials biological reaction pool (10) is provided with the second sewage pump (9), photocatalytic degradation reaction tank
(3) connecting pipe between bottom and the bottom of Membrane Materials biological reaction pool (10) is provided with second circulation pump (20), and light is urged
Change degradation reaction pond (3) and constitute cyclic system with Membrane Materials biological reaction pool (10) through the second sewage pump (9), second circulation pump (20)
System；Clear water reserviors (17) and Membrane Materials biological reaction pool (10) connect into loop structure through two connecting pipes, two connecting pipes
On be respectively equipped with first circulation pump (15) and condenser (14)；The bottom of photocatalytic degradation reaction tank (3) is provided with water distributing plate (5),
Water distributing plate (5) is arranged below aeration zone, and the top of photocatalytic degradation reaction tank (3) is provided with microwave electrodeless ultraviolet light lamp (7)；Microwave
Electrodeless ultraviolet light lamp (7) is located in quartzy lampshade (6), and quartzy lampshade (6) outer wall uniform application has powder TiO2；Micro-wave nonpolar
It is filled with mercury metal and noble gases, the frequency of microwave discharge is 2450-5000MHz in ultra-violet lamp (7)；Distillation film component
(13) poly tetrafluoroethylene or polypropylene screen are adopted, membrane aperture is 0.1～0.4 μm.
2. photocatalysis membrana distillation treatment of dyeing wastewater reclaiming system according to claim 1 is it is characterised in that photocatalysis are dropped
Solution reaction tank (3) top also sets up ozonolysis equipment (8).
3. photocatalysis membrana distillation treatment of dyeing wastewater reclaiming system according to claim 1 is it is characterised in that Membrane Materials are given birth to
Heat collector (11) in thing reaction tank (10) connects to solar energy absorption plant (18).
4. photocatalysis membrana distillation treatment of dyeing wastewater reclaiming system according to claim 1 is it is characterised in that photocatalysis are dropped
First micro porous aeration head (4) of solution reaction tank (3) and Membrane Materials biological reaction pool (10) bottom, the second micro porous aeration head (12) are all
It is connected with blower fan (21).
5. photocatalysis membrana distillation treatment of dyeing wastewater reclaiming system according to claim 1 is it is characterised in that photocatalysis are dropped
It is provided with temperature sensor, pH sensor and liquid level controller, Membrane Materials biological reaction pool is provided with temperature in (10) in solution reaction tank (3)
Degree sensor and pH sensor.
6. the technique for the treatment of of dyeing wastewater reclaiming system is distilled it is characterised in that wrapping based on the photocatalysis membrana described in claim 1
Include following steps：
The dyeing waste water of intake pool (1) in the presence of the first sewage pump (2), through pipeline input light catalytic degradation reaction pond (3)
Interior；
In the aeration zone of photocatalytic degradation reaction tank (3), in the presence of blower fan (21), aeration is carried out to sewage, after aeration
Sewage intercepting well microwave electrodeless ultraviolet light lamp (7) carries out microwave electrodeless ultraviolet light catalysis reaction；
Through the reacted sewage of microwave electrodeless ultraviolet light catalysis by the second sewage pump (9) from photocatalytic degradation reaction tank (3)
Top pumps into the aeration zone aeration of the bottom of Membrane Materials biological reaction pool (10), and the sewage after aeration is through distillation film component (13)
Desalination；
Through aeration, desalination sewage in the presence of first circulation pump (15), in clear water reserviors (17) and Membrane Materials biological respinse
Circulate between pond (10), and cool down in the presence of condenser (14), qualified clear water after flow out through clear water reserviors (17).
7. photocatalysis membrana according to claim 6 distills the technique for the treatment of of dyeing wastewater reclaiming system it is characterised in that light
PH value in catalytic degradation reaction pond (3) is 6.5～7.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510317655.6A CN104891744B (en) | 2015-06-10 | 2015-06-10 | Photocatalytic film distillation printing and dyeing wastewater treatment and recovery system and technology |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201510317655.6A CN104891744B (en) | 2015-06-10 | 2015-06-10 | Photocatalytic film distillation printing and dyeing wastewater treatment and recovery system and technology |
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| CN104891744B true CN104891744B (en) | 2017-02-22 |
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| CN105217705B (en) * | 2015-11-06 | 2017-06-09 | 河海大学 | A kind of PPCPs classes Waste Water Treatment and method |
| CN105906100B (en) * | 2016-06-08 | 2018-11-30 | 浙江奇彩环境科技股份有限公司 | A kind of processing method of methyl sulfur bacterium panacen waste water |
| CN106115898B (en) * | 2016-07-23 | 2020-04-07 | 北京普仁生态技术有限公司 | Application of waste gas containing ozone after microwave treatment in sewage aeration treatment |
| CN106336055B (en) * | 2016-10-27 | 2019-04-30 | 浙江奇彩环境科技股份有限公司 | A kind of processing of acid-bearing wastewater utilizes technique |
| CN106545074B (en) * | 2016-10-31 | 2019-01-11 | 河海大学 | A kind of photocatalysis catch-basin |
| CN107748136B (en) * | 2017-09-26 | 2020-04-28 | 河海大学 | Multifunctional photocatalytic film performance test system and test method thereof |
| CN107827310A (en) * | 2017-10-14 | 2018-03-23 | 常州工学院 | A kind of solar energy photocatalytic degraded cell system |
| CN108275749A (en) * | 2018-04-19 | 2018-07-13 | 深圳市美宜佳机电设备有限公司 | A kind of organic liquid waste processing unit and organic waste liquor treatment system |
| CN110338382B (en) * | 2019-08-15 | 2022-08-12 | 四川江中源食品有限公司 | Crisp-keeping process for producing convenient hot pot vegetable bags by high-salt salting technology |
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| CN204874184U (en) * | 2015-06-10 | 2015-12-16 | 河海大学 | Photocatalysis membrane distillation printing and dyeing wastewater handles recycling system |
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